Question

Genotypic ratio of dihybrid ​

Answer 1

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$\:\bullet$Genotypic ratio of Dihybrid cross = 1:2:1:2:4:2:1:2:1

$\:\bullet$Phenotypic ratio of Dihybrid cross = 9:3:3:1

$\huge{\underline{\boxed{\mathfrak \orange{Explanation :-}}}}$

In the Dihybrid cross, the parent plant having the phenotype round yellow seeds have the factor of Inheritance of gene combination RRYY( in which RR the dominant genes for Round shaped where is YY are the dominant genes for yellow color).On the other hand, the parent plants having the phenotype wrinkle green seeds have the factors of Inheritance of gene combination of rryy (in which the rr the recessive genes for wrinkled shape and yy are the recessive genes for green color).

Answer 2

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Genotypic ratio of Dihybrid cross = 1:2:1:2:4:2:1:2:1

➡These nine genotypes can be grouped into four phenotypes, for example 1 YYRR + 2 YYRr + 2 YyRR + 4 YyRr = 9Y-R- round, yellow peas.